Flexible Display Support Structure with Hollow Structures for Bending
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Solution Overview
Problem
The existing flexible OLED display modules face issues with poor bending performance, particularly at smaller bending radii, due to inconsistent deformation between the support layer and the adhesive layer, leading to fractures and debonding, especially in complex shapes like drop-shaped and wedge-shaped structures.
Innovation Solution
A support structure with a bending area featuring multiple rows of first strip hollow structures and circular hollow structures, strategically arranged to disperse local stress and improve ductility, allowing for better adaptation to various bending radii and reducing the risk of structural fractures and debonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the support layer is increased to ensure rigidity, then the rigidity and supportability are improved, but the bendability and bending performance deteriorate
Solution Approach 1:
The support layer is designed with an array of hollow sphere structures distributed throughout its thickness, creating a porous configuration that reduces material density while maintaining structural integrity. This porous architecture allows the support layer to achieve adequate rigidity with reduced thickness, thereby improving bendability and bending performance without sacrificing support capability.
Solution Approach 2:
The invention creates a composite structure by combining the support layer with hollow sphere structures, forming a hybrid material system that integrates the mechanical properties of both components. This composite approach enables the support layer to exhibit optimized rigidity-to-weight ratio and enhanced bending characteristics compared to solid support layers of equivalent thickness.
2Adaptability or versatility
If the support layer thickness is reduced to improve bendability, then the bendability is improved, but the rigidity and supportability deteriorate
Solution Approach 1:
By introducing hollow sphere structures within the support layer, the invention creates a porous architecture that provides mechanical support through the geometric configuration of the hollow spheres rather than relying solely on material thickness. This allows thin support layers to maintain adequate rigidity while achieving superior bendability.
Solution Approach 2:
The hollow sphere structures introduce curved geometries distributed throughout the support layer, which help distribute stress during bending operations. The spherical shapes naturally redirect and分散 stresses, preventing stress concentration that would otherwise occur in flat, thin support layers, thereby maintaining rigidity despite reduced thickness.
3Stability of the object's composition
If a solid support layer is used to ensure structural integrity, then the structural integrity is maintained, but the bending performance at small radii deteriorates due to stress concentration
Solution Approach 1:
The hollow sphere structures create a porous configuration that prevents stress concentration by distributing mechanical loads across multiple spherical interfaces. During bending, stresses are分散 to the hollow sphere structures rather than concentrating in the support layer matrix, maintaining structural integrity while improving bending performance at small radii.
Solution Approach 2:
The support layer is segmented into multiple regions by the distributed hollow sphere structures, which act as discrete stress management units. Each hollow sphere functions as an independent stress-distributing element, collectively maintaining structural integrity across the entire support layer during bending operations.
Data Source
AI summary
A support structure, a flexible display panel, and an electronic device are provided. By reasonably providing a corresponding strip hollow structure and a circular hollow structure in a bending area, concentrated local stress can be dispersed, bending performance of the support structure can be improved, and it is able to adapt to different bending radii. In addition, ductility is improved, and coordination of deformation between a support layer and a film layer of the flexible display panel and the electronic device is ensured.